[web test] repair test broken by 0872ac2a1db0 after the above cset, during test instance's url is set before the creation of core entities (ie created at database initialization), hence they have now a valid cwuri.

# -*- coding: utf-8 -*-
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s entity's classes"""